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    • Keywords


      stars; hydrogen-deficient—stars; radio observations—stars; individual—planetary nebulae

    • Abstract


      VLA observations at 6 cm have been obtained for three hydrogen-deficient objects υ Sgr, V 348 Sgr, and A bell 58. A bell 58 was also observed at 2 cm. Only upper limits to the flux density could be set for these sources. A new radio source at 6 cm was found in the field of υ Sgr.

      The upper limit for 6 cm flux density of V348 Sgr sets an upper limit to its reddening asE(B–V) ≤ 0.65. The hydrogen deficient planetary nebula A 58 shows much lower radio flux than expected from the infrared-radio flux density relationship of planetary nebulae.

    • Author Affiliations


      N. Kameswara Rao1 V. R. Venugopal2 A. R. Patnaik2

      1. Indian Institute of Astrophysics, Bangalore - 560034
      2. Radio Astronomy Centre, Tata Institute of Fundamental Research, Post Box 8, Udhagamandalam - 643001
    • Dates

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